Gear segment for window regulators



S. W. NICHOLSON GEAR SEGMENT EOE wNDow REGULAToRs Filed oct. 23, 1925 2 sheets-sheet 1 'l 'I II il I Il: |I Il; |I ||I lll I I l/ I I I I I Jr I I' EEMQ/// M dan. 6, 1931.

il II I l| 'I Il III l l l l I I I I l I l I Jan. 6, 1931. s. w. NICHOLSON f "1,788,168

GEAR SEGMENT FOR WINDOW REGULATORS Filed Oct. 23, 1925 2 Sheets-Sheet 2 l, Ilu jm; Ulli N excam@ window regulatorlwhich maybe cheaply lPatented Jan. 6, 1931Y Y' -lfz UNITED STATES STANLEY w. NICHOLSON,

` THE DURA COMPANY,

oF TOLEDO, `oHIo,` As'sreiiron,y Ey ainsi@ AfssreNNiiNTs, y

OF TOLEDO, OHIO, e-OOnrOA-TIQN `Orf OHlO o Y GEAR SEGMENT Fon wrNfno w'snnenAfroas(ff The invention' relates to window regulatorsand is particularly applicable to mechanisms for raising and lowering windows of motorr vehicles. One of the objects of the invention is the provision of an improved manufactured. Another object is to Vprovide a window regulator having an improved actuating mechanism which is'so constructed that it has a long life of operation.

- ther object is to provide a simple arrange ment of windowf; regulator, mounting plate, a llfter larm anda convoylute counterbalancing spring.

With these as well as other obj ects in view Y the invention resides in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set forth.

In the drawings Figure l is an-l lnterior side elevation,

- having in yits upper portion. the opening 2 and in vits lower portion the chamber 8. is the window in the natureof av glass plate,

which is vadapted to be vertically slid from a4V position closing kthe` opening 2 into the chamber 3.

The regulator yfor raisinigt and lowering theywindow includes the .li r arm` 5 suitahl connected at its outer end to the window asV y means of the roller 6 upon the lifter arm engaging in the channel 7 secured to the lower edge of the window. This lifter mounting is secured The pivot armr is pivotally mounted upon the plate V8,the upper portion of which to the lock boa-rd 9 of the door.

in the present instance is formed by the pin 10 which is journal'ed in the lower "portion,

ofthe mounting plate below the lock board A 'furn including a' y-in'ent llgis' formed fr'omfa sheets'teel blank of substantially uniform; thickness andlitsteeth I15 are frolled and, as shown particularly in yFigures 2 and 5,'*have a greater width VVthan i Whichfassist m instance, my inv .vention is applied to a motor vehicle door 1 ing the wearing'qualities of the gear sega'na to' the lguter. Sia of which iSV-.aeiy i -curedlthe inner 'end-.of the lifter armn For swinging the lifter 4arrn ,glihave providedthe i A.gear l segment 11'- which is rigidly secured!` to the lifter arm- 1with' its teeth concentric with :f

the pin'lO.y 12 is a'drivingpinionhaving its 4teeth meshingwith those of the gear segment l1 and. 13 is a Vhandle-- suitably connected tol l'bis they Vdrivingpinion to':rotatetheflatter -in either `direction;` ln thefpresent instance 1I y Ahave provided betweenfthe'handle' and the driving .pinion Vsuitable locking mechanism within the bell-shapedfhousingS14 for normally holding fthe lifterarrn and 1 consequer'itly thelwindowlfin its` -'various `adjusted positions. 1'

f* 'To reduce the of -nianufacture the :window regulator andiat' `the same time! to increase its life ofoperationthefge'ar-segthemain' portion ofthe .body 16 of the'gear segment; l Furthermore; thegfportion off the bodylr' of: thev 'gear' segmenty i"adjacentito the jbases` ofi theginterdental spacesV 17- isy fof- 1 greater-width 'than' the mainj portion .of the body owing to, lthellateralYfprojectionsmjlS, e' forcing ,thefteethrl- In rollin-g, finishedzlblank having n rou'ghedout over sized teeth is brought into engagement when cold with a tooth-forming die, oneof' the members bein rotated so that kthe material forming the faces of the teeth is made more dense andY is hardened in addition to being laterally vextended in bothdirections. This is also true of the material at the bases of the interdental spaces'. Thus itis seen that my gearsegment hasgenerated teethof maximum accuracywhichare integral with the body and are provided with extended hardened and burnished bearing'surfaces thereby increasment and the actuating mechanism of the aring sur- 1.

windowregulator` as Ywell as effecting smoother tooth action.

For counterbalancing the weight of the windowy 4' '1I haveprovided the convolutef spring 19 which is located at the inner side .of the mounting plate 8 and below the lock board 9 and surrounds the inner end off the pin 10. This convolute spring has its inner 5 end secured to the pin 9, in the Vpresent instancebyrengaging in the slot 20 in the pin, n and has-fitsifoiiterfend secured to the mounting plate; This latter connection is made by Y means ofthe transverse inturned ear 21 upon ,lo the -ri'ghhhand inclined lower fedge 22d-fthe f mounting plate, the ear preferably havingat its inner edgethe upwardly extending projection 23 for preventing 'the outer hooked end of the convolute sprin lfrom becoming e i 15 laterally disengaged from t 'e'ear. There is also acorresponding ear 24 upon the lefthand inclined lower Yedge-:25, of the mount- A ing plate for-engagement by the outer fend of the .convolute y'spring in the event that the ,w'indowregulator isto be used-in adoor lon the opposite sideofl the motor-vehicle. f

What I claim as Vmy invention is: A Lf'Azsheet metal ,toothedvmember for win y Y dow regulators'havingteeth of greater width f .u 'lthan its bodyvand providedwith bearing -surfacesof greater hardnessthan its-body, .Y Y lsaid* teethandbody eing' formed from a sin- A glepiece of sheet metal.A j

2..A. toothed member, for windowV regu? 50 e laters formed` from a pieceiof'sheet metal of substantially uniform thickness and having t the `teeth and theportions of the body at the interdent'alspacessolidandofigreater width f `than its .,body. 1 v f :l g 3." A toothedl segnientv lfor window :regu:-

ao ments at thebases ofthe interdentalspaces.

.lators'formed from sheet steelfof SubstantialA if Y p r -l'y vuniform thickness and having rolled teeth Y lofgreaterwidthfthanthe vbody ofthe segvment and provided with lateral reinforce- 4.. A sheet 'metal toothed memberfor window regulators'y having a Abody andv teeth in-A Vtegral therewith `and provided with extended 'hardened .bearing surfaces. e

` Y `4|; In'ltestimon'y whereof I affix vmy signature. y

Y STANLEYYW. NIoHoLsoN.

Y 'Alge 

